Usefull Key Combinations in Linux

Ctrl-s -> Is the scroll lock, when you have too much outut scrolling quickly you can use Ctrl-s to stop process output. You can use shift-Pageup/Pagedown to scroll up and down and read it and Ctrl-q resumes.

Ctrl-l -> Clear the screen and position the prompt at the top left corner.

Ctrl-a -> Takes you to the begening of the line and Ctrl-e takes you to the end of the line.